Manufacture custom tools used in factories and plants.
Assembles barrel, setting lever, ratchet wheel, and barrel bridge to pillar plate to form barrel-bridge assembly, using watchmaker’s tools, loupe, and holding fixture: Positions pillar plate on holding fixture and places barrel in plate recess, using tweezers and loupe. Screws barrel bridge with assembled crown wheel and click in position over barrel and screws setting lever and ratchet wheel in place, using screwdriver. Holds ratchet wheel in position and tightens ratchet screw, using screwdriver. Positions clutch wheel and winding pinion in place and inserts stem through hole in pillar plate to secure assembly, using tweezers and loupe.